Mechanical movement



(ModeL) T. R. MCKNIGHT.

MECHANICAL MOVEMENT.

Patented May 1, 1888.

N, METERS. Phulo-Liihngmphur. Washington, A). c.

NITED STATES PATENT OFFICE.

THOMAS RUEL MOKNIGHT, OF MOUNT PLEASANT, IOWA.

MECHANICAL MOVEMENT.

SPECIPIGATION forming part of Letters Patent No. 382,101, dated May 1,1888. Application filed October 24, 1387. Serial No. 253,256. (ModeL) T0aZZ whom it may concern.-

Be it known that I, THOMAS BUEL Mc- KNIGHT, of Mount Pleasant, in thecounty of of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

My invention relates to an improved mechanical movement.

The object of my invention is to provide a simple, cheap, and effectivedevice which may be used to operate a vehiclebrake, a throttlevalve of asteam-engine, orwhich may be used for other purposes where a lockingadjustment of a lever is required.

With this object in view my invention consistsin the novel constructionand peculiar combination and arrangement of parts, as will behereinafter set forth,and pointed out in the claims.

In the accompanying drawings, Figure 1 is a side elevation of thedevice. Fig. 2is a simi lar view with the outer portion of the slidingbox removed. Fig. 3 is a transverse vertical section.

A indicates a base-plate having two guidestrips, a a, secured thereto ormade integral therewith, and slightly removed from the surface of thesame to form grooves or ways for a sliding box, B. The base-plate thusconstructed is applied to a wagon-body or other object by means of boltsor in any other suitable manner. The sliding box B is preferably anoblong metallic frame, open at two sides and one end, its outer facebeing provided with outwardly-projecting flanges 1), adapted to enterthe grooves or ways of the base-plate, in which the box B is adapted tohave a longitudinal movement.

The inner and outer plates, H H, ofthebox B are provided with elongatedslots 0, for the reception of a short post, d, which is secured to thebase-plate A at about the center of its length, and made to projectthrough the slots 0, preferably having its outer end flush with theouter face of the box B. The post d serves as a pivot for a notchedsegmental lever, C, which is placed loosely on this post or pin near oneend, so that the notched edges of the slot formed in the portion a ofthe lever will be cccentric with a roller, f, journaled between theinner and outer faces of the box B.

Thelever O is made in the form shown in the drawings, having a slotbetween the notched segment G and the main portion 0, the under side ofthe segment 0 being made smooth and adapted to form a track for aroller, f, journaled in the box B. Thus it will be seen that the segment0 works between two rollers, ff, journaled in the box B, one beingadapted to enter the notches of the segment and retain the lever at thedesired adjustment, while the roller f makes contact with the innersurface of the segment when the lever is moved from left to right. Thefree end of the lever G is guided between two parallel semiellipticalplates, D, which are secured to the base-plate A by bolts h.

the direction indicated by the arrow, the notched segment rides upon theroller f of the box B, and thus the latter is caused to slide in Whenthe lever G is thrown forward or in its ways or guides in base-plate Aand opcrates the brake or other device attached to rod F, as hereinafterdescribed.

A short bar or link, E, is pivoted at one end to the base-plate A, andextends between the inner and outer plates of the boxBat the open end ofthe latter.

The bar or link E is made with an elongated slot, 9, for the receptionof a pin, 9', which connects the plates of the box at its open end, thispin being adapted to work in the slot 9 of the link E when the device isoperated. One end of a connecting-rod, F, is attached to the free end ofthe link E, while the opposite end of said rod is connected to abrake-rod or other device. (Not shown.)

When the lever G is thrown forward,the segment 0 rides upon the rollerf, which enters one of the notches of the segment, and is retainedtherein by the pulling action of the con= necting-rod F upon the box B.

It will be seen that by the simple operation of throwing the leverforward the box B is slid in thebase-plate and retained at any desiredadjustment without the liability of becoming accidentally released, asthe pull of the connecting-rod and the roller f are in the same plane,and the box B is prevented from the slightest movement in its seat.While the parts are thus retained in their rigid locked position, thelever can be easily and quickly operated to release said parts.

If desired, this device may be applied to a steam-engine to operate thethrottle-valve or other mechanism .where the adjustment of anoperating-lever at different points in its throw is desirable. 7

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a mechanical movement, the combination, with a base-plate, of abox adapted to slide therein,carrying a roller,and a lever pivoted tothe base-plate and provided with a curved slot, in which the roller onthe box rests, substantially as set forth.

2. In a mechanical movement, the combination, with a base-plate-havinggrooves or ways, of a box adapted to slide therein, and a notchedsegmental lever pivoted to operate within the box and engage a rollerjournaled therein to give the box a sliding movement and retain it inlocked adjustment, substantially as set forth.

3. In a mechanical movement, the combination, with a base plate havingways or guides,of an open box to slide therein, having elongated slotsin its inner and outer faces, a post secured to the base-plate andextending through these slots, a notched segmental lever loosely mountedon said post, and a roller journaled in the box, with which thesegmental lever engages to operate the box and retain it in lockedadjustment, substantially as set forth.

4. In a mechanical movement, the combination, with a base-plate havingguides or ways, of an open box to slide therein, a post secured to thebase-plate and adapted to work in elongated slots in the box, a leverhaving a segment notched on one face and smooth on the other, androllersjournaled in the box to engage the segment on both faces,substantially as set forth.

5. In a mechanical movement, the combination, with a base-plate, of anopen box to slide therein, a notched segmental lever pivoted to work insaid box, rollers to engage said segment, and a rod connected to one endof the sliding box, substantially as set forth.

6. In a mechanical movement, the combination, with a base-plate, of anopen box to slide therein, a notched segmental lever pivoted to work insaid box and engage rollers journaled therein, a bar orlink pivoted tothe base-plate, having a sliding connection with the box, and a rodconnected to the free end of the link, substantially as set forth.

7. In a mechanical movement, the combination, with a base-plate, of anopen box to slide therein, a segmental notched lever pivoted to workbetween the plates of the box, a roller journaled in the box to engagethe notches of the segmental lever, and a pair of 6 semi-ellipticalplates to guide said lever, substantially as set forth. 1

8. In a mechanical movement, the combination, with a base-plate, of abox to slide therein, a notched segmental lever pivoted to work in saidbox, a roller journaled in the box and adapted to engage the segmentallever, and a rod so connected to the sliding box that its pullingact-ion will always be in a line at right angles to the axisof saidroller, sub stantially as set forth. I

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

THOWAS RUEL MoKNIGHT.

Witnesses:

E. S. HOWARD, WM. ALBnRTsoN.

